package com.cencat.order.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.cencat.order.dto.MerchantDTO;
import com.cencat.order.entity.Merchant;
import com.cencat.order.mapper.MerchantMapper;
import com.cencat.order.service.MerchantService;
import com.cencat.order.vo.MerchantVO;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * 商家业务逻辑实现类
 * 
 * @author cencat
 * @date 2024-01-20
 */
@Slf4j
@Service
@RequiredArgsConstructor
public class MerchantServiceImpl extends ServiceImpl<MerchantMapper, Merchant> implements MerchantService {

    private final MerchantMapper merchantMapper;

    @Override
    public IPage<MerchantVO> getMerchantPage(Page<MerchantVO> page, String merchantName, String merchantCode,
                                           Integer merchantStatus, Integer verificationStatus,
                                           String businessType, String contactPhone,
                                           LocalDateTime startTime, LocalDateTime endTime) {
        log.info("分页查询商家列表，参数：merchantName={}, merchantCode={}, merchantStatus={}, verificationStatus={}, businessType={}, contactPhone={}, startTime={}, endTime={}",
                merchantName, merchantCode, merchantStatus, verificationStatus, businessType, contactPhone, startTime, endTime);
        
        IPage<MerchantVO> result = merchantMapper.selectMerchantPage(page, merchantName, merchantCode,
                merchantStatus, verificationStatus, businessType, contactPhone, startTime, endTime);
        
        log.info("分页查询商家列表完成，总数：{}", result.getTotal());
        return result;
    }

    @Override
    public MerchantVO getByMerchantCode(String merchantCode) {
        log.info("根据商家编号查询商家信息，merchantCode={}", merchantCode);
        
        if (!StringUtils.hasText(merchantCode)) {
            log.warn("商家编号不能为空");
            return null;
        }
        
        MerchantVO result = merchantMapper.selectByMerchantCode(merchantCode);
        log.info("根据商家编号查询商家信息完成，result={}", result != null ? "找到" : "未找到");
        return result;
    }

    @Override
    public List<MerchantVO> getByStatus(Integer merchantStatus, Integer verificationStatus,
                                       LocalDateTime startTime, LocalDateTime endTime, Integer limit) {
        log.info("根据状态查询商家列表，merchantStatus={}, verificationStatus={}, startTime={}, endTime={}, limit={}",
                merchantStatus, verificationStatus, startTime, endTime, limit);
        
        List<MerchantVO> result = merchantMapper.selectByStatus(merchantStatus, verificationStatus,
                startTime, endTime, limit);
        log.info("根据状态查询商家列表完成，数量：{}", result.size());
        return result;
    }

    @Override
    public List<MerchantVO> getByBusinessType(String businessType, Integer merchantStatus,
                                             LocalDateTime startTime, LocalDateTime endTime, Integer limit) {
        log.info("根据业务类型查询商家列表，businessType={}, merchantStatus={}, startTime={}, endTime={}, limit={}",
                businessType, merchantStatus, startTime, endTime, limit);
        
        if (!StringUtils.hasText(businessType)) {
            log.warn("业务类型不能为空");
            return List.of();
        }
        
        List<MerchantVO> result = merchantMapper.selectByBusinessType(businessType, merchantStatus,
                startTime, endTime, limit);
        log.info("根据业务类型查询商家列表完成，数量：{}", result.size());
        return result;
    }

    @Override
    public List<MerchantVO> getByLocation(BigDecimal longitude, BigDecimal latitude, BigDecimal radius,
                                         Integer merchantStatus, Integer limit) {
        log.info("根据位置查询商家列表，longitude={}, latitude={}, radius={}, merchantStatus={}, limit={}",
                longitude, latitude, radius, merchantStatus, limit);
        
        if (longitude == null || latitude == null || radius == null) {
            log.warn("位置信息不能为空");
            return List.of();
        }
        
        List<MerchantVO> result = merchantMapper.selectByLocation(longitude, latitude, radius,
                merchantStatus, limit);
        log.info("根据位置查询商家列表完成，数量：{}", result.size());
        return result;
    }

    @Override
    public Map<String, Object> getMerchantStatistics(Integer merchantStatus, Integer verificationStatus,
                                                    String businessType, LocalDateTime startTime,
                                                    LocalDateTime endTime) {
        log.info("查询商家统计信息，merchantStatus={}, verificationStatus={}, businessType={}, startTime={}, endTime={}",
                merchantStatus, verificationStatus, businessType, startTime, endTime);
        
        Map<String, Object> result = merchantMapper.selectMerchantStatistics(merchantStatus, verificationStatus,
                businessType, startTime, endTime);
        
        log.info("查询商家统计信息完成");
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean createMerchant(MerchantDTO merchantDTO) {
        log.info("创建商家信息，merchantDTO={}", merchantDTO);
        
        if (merchantDTO == null) {
            log.warn("商家信息不能为空");
            return false;
        }
        
        // 检查商家编号是否已存在
        if (StringUtils.hasText(merchantDTO.getMerchantCode())) {
            MerchantVO existingMerchant = merchantMapper.selectByMerchantCode(merchantDTO.getMerchantCode());
            if (existingMerchant != null) {
                log.warn("商家编号已存在：{}", merchantDTO.getMerchantCode());
                return false;
            }
        }
        
        Merchant merchant = new Merchant();
        BeanUtils.copyProperties(merchantDTO, merchant);
        merchant.setCreateTime(LocalDateTime.now());
        merchant.setUpdateTime(LocalDateTime.now());
        merchant.setDeleted(false);
        
        boolean result = save(merchant);
        log.info("创建商家信息完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean updateMerchant(Long merchantId, MerchantDTO merchantDTO) {
        log.info("更新商家信息，merchantId={}, merchantDTO={}", merchantId, merchantDTO);
        
        if (merchantId == null || merchantDTO == null) {
            log.warn("商家ID和商家信息不能为空");
            return false;
        }
        
        Merchant existingMerchant = getById(merchantId);
        if (existingMerchant == null) {
            log.warn("商家不存在：{}", merchantId);
            return false;
        }
        
        Merchant merchant = new Merchant();
        BeanUtils.copyProperties(merchantDTO, merchant);
        merchant.setId(merchantId);
        merchant.setUpdateTime(LocalDateTime.now());
        
        boolean result = updateById(merchant);
        log.info("更新商家信息完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean registerMerchant(MerchantDTO merchantDTO, String registrationSource) {
        log.info("商家注册，merchantDTO={}, registrationSource={}", merchantDTO, registrationSource);
        
        if (merchantDTO == null) {
            log.warn("商家信息不能为空");
            return false;
        }
        
        // 设置初始状态
        merchantDTO.setMerchantStatus(1); // 1表示待审核
        merchantDTO.setVerificationStatus(0); // 0表示未认证
        
        Merchant merchant = new Merchant();
        BeanUtils.copyProperties(merchantDTO, merchant);
        merchant.setCreateTime(LocalDateTime.now());
        merchant.setUpdateTime(LocalDateTime.now());
        merchant.setDeleted(false);
        
        boolean result = save(merchant);
        log.info("商家注册完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean verifyMerchant(Long merchantId, Integer verificationStatus, String verificationRemark,
                                 LocalDateTime verificationTime, Long verifierId) {
        log.info("商家认证，merchantId={}, verificationStatus={}, verificationRemark={}, verificationTime={}, verifierId={}",
                merchantId, verificationStatus, verificationRemark, verificationTime, verifierId);
        
        if (merchantId == null || verificationStatus == null) {
            log.warn("商家ID和认证状态不能为空");
            return false;
        }
        
        boolean result = merchantMapper.updateVerificationStatus(merchantId, verificationStatus, verificationRemark,
                verificationTime, verifierId) > 0;
        log.info("商家认证完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean updateMerchantStatus(Long merchantId, Integer merchantStatus, String statusRemark) {
        log.info("更新商家状态，merchantId={}, merchantStatus={}, statusRemark={}",
                merchantId, merchantStatus, statusRemark);
        
        if (merchantId == null || merchantStatus == null) {
            log.warn("商家ID和状态不能为空");
            return false;
        }
        
        boolean result = merchantMapper.updateMerchantStatus(merchantId, merchantStatus, statusRemark) > 0;
        log.info("更新商家状态完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean updateBusinessHours(Long merchantId, LocalTime openTime, LocalTime closeTime,
                                      String businessDays, String specialHours) {
        log.info("更新营业时间，merchantId={}, openTime={}, closeTime={}, businessDays={}, specialHours={}",
                merchantId, openTime, closeTime, businessDays, specialHours);
        
        if (merchantId == null) {
            log.warn("商家ID不能为空");
            return false;
        }
        
        boolean result = merchantMapper.updateBusinessHours(merchantId, openTime, closeTime,
                businessDays, specialHours) > 0;
        log.info("更新营业时间完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean updateContactInfo(Long merchantId, String contactPhone, String contactEmail,
                                   String contactPerson, String emergencyContact) {
        log.info("更新联系信息，merchantId={}, contactPhone={}, contactEmail={}, contactPerson={}, emergencyContact={}",
                merchantId, contactPhone, contactEmail, contactPerson, emergencyContact);
        
        if (merchantId == null) {
            log.warn("商家ID不能为空");
            return false;
        }
        
        boolean result = merchantMapper.updateContactInfo(merchantId, contactPhone, contactEmail,
                contactPerson, emergencyContact) > 0;
        log.info("更新联系信息完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean updateAddressInfo(Long merchantId, String province, String city, String district,
                                    String detailAddress, BigDecimal longitude, BigDecimal latitude) {
        log.info("更新地址信息，merchantId={}, province={}, city={}, district={}, detailAddress={}, longitude={}, latitude={}",
                merchantId, province, city, district, detailAddress, longitude, latitude);
        
        if (merchantId == null) {
            log.warn("商家ID不能为空");
            return false;
        }
        
        boolean result = merchantMapper.updateAddressInfo(merchantId, province, city, district,
                detailAddress, longitude, latitude) > 0;
        log.info("更新地址信息完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean updateDeliverySettings(Long merchantId, BigDecimal deliveryRadius, BigDecimal minOrderAmount,
                                         BigDecimal deliveryFee, Integer deliveryTimeLimit,
                                         String deliveryRemark) {
        log.info("更新配送设置，merchantId={}, deliveryRadius={}, minOrderAmount={}, deliveryFee={}, deliveryTimeLimit={}, deliveryRemark={}",
                merchantId, deliveryRadius, minOrderAmount, deliveryFee, deliveryTimeLimit, deliveryRemark);
        
        if (merchantId == null) {
            log.warn("商家ID不能为空");
            return false;
        }
        
        boolean result = merchantMapper.updateDeliverySettings(merchantId, deliveryRadius, minOrderAmount,
                deliveryFee, deliveryTimeLimit, deliveryRemark) > 0;
        log.info("更新配送设置完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean batchUpdateMerchantStatus(List<Long> merchantIds, Integer merchantStatus) {
        log.info("批量更新商家状态，merchantIds={}, merchantStatus={}", merchantIds, merchantStatus);
        
        if (merchantIds == null || merchantIds.isEmpty() || merchantStatus == null) {
            log.warn("商家ID列表和状态不能为空");
            return false;
        }
        
        boolean result = merchantMapper.batchUpdateMerchantStatus(merchantIds, merchantStatus) > 0;
        log.info("批量更新商家状态完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean batchUpdateVerificationStatus(List<Long> merchantIds, Integer verificationStatus) {
        log.info("批量更新认证状态，merchantIds={}, verificationStatus={}", merchantIds, verificationStatus);
        
        if (merchantIds == null || merchantIds.isEmpty() || verificationStatus == null) {
            log.warn("商家ID列表和认证状态不能为空");
            return false;
        }
        
        boolean result = merchantMapper.batchUpdateVerificationStatus(merchantIds, verificationStatus) > 0;
        log.info("批量更新认证状态完成，result={}", result);
        return result;
    }

    @Override
    public Map<String, Object> evaluateMerchantCredit(Long merchantId, Map<String, Object> evaluationCriteria) {
        log.info("商家信用评估，merchantId={}, evaluationCriteria={}", merchantId, evaluationCriteria);
        
        if (merchantId == null) {
            log.warn("商家ID不能为空");
            return Map.of("success", false, "message", "商家ID不能为空");
        }
        
        // 这里应该实现实际的信用评估算法
        Map<String, Object> result = Map.of(
                "success", true,
                "creditScore", 85,
                "creditLevel", "良好",
                "evaluationFactors", Map.of(
                        "orderVolume", 90,
                        "customerRating", 88,
                        "paymentHistory", 92,
                        "complianceRecord", 80
                ),
                "riskLevel", "低",
                "recommendations", List.of("提升服务质量", "优化配送时效")
        );
        
        log.info("商家信用评估完成");
        return result;
    }

    @Override
    public Map<String, Object> analyzeMerchantBusiness(Long merchantId, LocalDateTime startTime,
                                                      LocalDateTime endTime, String analysisType) {
        log.info("商家业务分析，merchantId={}, startTime={}, endTime={}, analysisType={}",
                merchantId, startTime, endTime, analysisType);
        
        if (merchantId == null) {
            log.warn("商家ID不能为空");
            return Map.of("success", false, "message", "商家ID不能为空");
        }
        
        Map<String, Object> result = merchantMapper.selectMerchantBusinessAnalysis(merchantId, startTime, endTime, analysisType);
        log.info("商家业务分析完成");
        return result;
    }

    @Override
    public Map<String, Object> evaluateServiceQuality(Long merchantId, LocalDateTime startTime,
                                                     LocalDateTime endTime, Map<String, Object> qualityMetrics) {
        log.info("商家服务质量评估，merchantId={}, startTime={}, endTime={}, qualityMetrics={}",
                merchantId, startTime, endTime, qualityMetrics);
        
        if (merchantId == null) {
            log.warn("商家ID不能为空");
            return Map.of("success", false, "message", "商家ID不能为空");
        }
        
        Map<String, Object> result = merchantMapper.selectServiceQualityEvaluation(merchantId, startTime, endTime, qualityMetrics);
        log.info("商家服务质量评估完成");
        return result;
    }

    @Override
    public List<MerchantVO> recommendMerchants(Map<String, Object> recommendationCriteria, Integer limit) {
        log.info("商家推荐，recommendationCriteria={}, limit={}", recommendationCriteria, limit);
        
        List<MerchantVO> result = merchantMapper.selectRecommendedMerchants(recommendationCriteria, limit);
        log.info("商家推荐完成，数量：{}", result.size());
        return result;
    }

    @Override
    public List<Map<String, Object>> getMerchantHotRanking(String rankingType, LocalDateTime startTime,
                                                          LocalDateTime endTime, Integer limit) {
        log.info("商家热度排行，rankingType={}, startTime={}, endTime={}, limit={}",
                rankingType, startTime, endTime, limit);
        
        List<Map<String, Object>> result = merchantMapper.selectMerchantHotRanking(rankingType, startTime, endTime, limit);
        log.info("商家热度排行完成，数量：{}", result.size());
        return result;
    }

    @Override
    public Map<String, Object> calculateMerchantRevenue(Long merchantId, LocalDateTime startTime,
                                                       LocalDateTime endTime, String calculationType) {
        log.info("商家收入统计，merchantId={}, startTime={}, endTime={}, calculationType={}",
                merchantId, startTime, endTime, calculationType);
        
        if (merchantId == null) {
            log.warn("商家ID不能为空");
            return Map.of("success", false, "message", "商家ID不能为空");
        }
        
        Map<String, Object> result = merchantMapper.selectMerchantRevenue(merchantId, startTime, endTime, calculationType);
        log.info("商家收入统计完成");
        return result;
    }

    @Override
    public Map<String, Object> analyzeMerchantCost(Long merchantId, LocalDateTime startTime,
                                                  LocalDateTime endTime, String costType) {
        log.info("商家成本分析，merchantId={}, startTime={}, endTime={}, costType={}",
                merchantId, startTime, endTime, costType);
        
        if (merchantId == null) {
            log.warn("商家ID不能为空");
            return Map.of("success", false, "message", "商家ID不能为空");
        }
        
        Map<String, Object> result = merchantMapper.selectMerchantCostAnalysis(merchantId, startTime, endTime, costType);
        log.info("商家成本分析完成");
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean softDeleteMerchant(Long merchantId) {
        log.info("软删除商家信息，merchantId={}", merchantId);
        
        if (merchantId == null) {
            log.warn("商家ID不能为空");
            return false;
        }
        
        Merchant merchant = new Merchant();
        merchant.setId(merchantId);
        merchant.setDeleted(true);
        merchant.setUpdateTime(LocalDateTime.now());
        
        boolean result = updateById(merchant);
        log.info("软删除商家信息完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean batchSoftDeleteMerchants(List<Long> merchantIds) {
        log.info("批量软删除商家信息，merchantIds={}", merchantIds);
        
        if (merchantIds == null || merchantIds.isEmpty()) {
            log.warn("商家ID列表不能为空");
            return false;
        }
        
        List<Merchant> merchants = merchantIds.stream()
                .map(id -> {
                    Merchant merchant = new Merchant();
                    merchant.setId(id);
                    merchant.setDeleted(true);
                    merchant.setUpdateTime(LocalDateTime.now());
                    return merchant;
                })
                .collect(Collectors.toList());
        
        boolean result = updateBatchById(merchants);
        log.info("批量软删除商家信息完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean restoreMerchant(Long merchantId) {
        log.info("恢复已删除的商家信息，merchantId={}", merchantId);
        
        if (merchantId == null) {
            log.warn("商家ID不能为空");
            return false;
        }
        
        Merchant merchant = new Merchant();
        merchant.setId(merchantId);
        merchant.setDeleted(false);
        merchant.setUpdateTime(LocalDateTime.now());
        
        boolean result = updateById(merchant);
        log.info("恢复已删除的商家信息完成，result={}", result);
        return result;
    }

    @Override
    public List<Map<String, Object>> getMerchantOperationLogs(Long merchantId, LocalDateTime startTime,
                                                             LocalDateTime endTime, Integer limit) {
        log.info("查询商家操作日志，merchantId={}, startTime={}, endTime={}, limit={}",
                merchantId, startTime, endTime, limit);
        
        if (merchantId == null) {
            log.warn("商家ID不能为空");
            return List.of();
        }
        
        List<Map<String, Object>> result = merchantMapper.selectMerchantOperationLogs(merchantId, startTime, endTime, limit);
        log.info("查询商家操作日志完成，数量：{}", result.size());
        return result;
    }
}